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Journal of Korean Society for Quality Management 1993;21(2): 109-. |
| 부품(部品)의 고장특성(故障特性)를 고려한 시스템의 수명교환방침(壽命交換方針) |
| 정영배 |
| 인천대학교 공과대학 산업공학과 |
| Age Replacement Policy for A System Considering Failure Characteristics of Components |
| Yeong-Bae Jeong |
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| ABSTRACT |
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Most systems are composed of components which have different failure chracteristics. Since the failure characteristics of components is different, it is rational and reasonable to establish a maintenance model to be considered repair and replacement policies which are proper to failure characteristics of these components. This paper proposes the age replacement time for a system composed of components which have different failure characteristics. In this model, it is assumed that a system is composed of a critical failure component, a major failure component, minor failure component. If any failure occurs to critical component before its age replacement time, the system should be replaced. If any failure does not occur until its age replacement time, preventive replacement should be performed at age replacement time T. Major component is minimal repaired if any failure occurs during operation. Minor component should be replaced as soon as failure is found. This paper determines the optimal replacement time of the system which minimize, total maintenance cost and initial stock Quantity of minor component within this optimal replacement time. Numerical example illustrates these results. |
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